Please read the following prompt carefully:

"A psychologist obtains a random sample of 20 mothers in the first trimester of their pregnancy.The mothers are asked to play Mozart in the house at least 30 minutes each day until they givebirth. After 5 years, the child is administered an IQ test. We know that IQs have a mean of 100. Ifthe IQs of the 20 children in the study result in a sample mean of 104.2 and a standard deviationof 14.7, is there evidence that the children havehigherIQs? Usethe= 0.05 level of significance."

Determine the critical value, t. Please type your solution in the text entry box provided.

Give the exact value of tto thethousandth (third decimal place).

• Example:X.XXX